What is the Least Common Multiple of 42860 and 42868?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least Common Multiple of 42860 and 42868 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42860 and 42868, than apply into the LCM equation.

GCF(42860,42868) = 4
LCM(42860,42868) = ( 42860 × 42868) / 4
LCM(42860,42868) = 1837322480 / 4
LCM(42860,42868) = 459330620

Least Common Multiple (LCM) of 42860 and 42868 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42860 and 42868. First we will calculate the prime factors of 42860 and 42868.

Prime Factorization of 42860

Prime Factorization of 42868

Now multiplying the highest exponent prime factors to calculate the LCM of 42860 and 42868.

LCM(42860,42868) = 2² × 5¹ × 2143¹ × 7¹ × 1531¹
LCM(42860,42868) = 459330620